Affichage des archives de jeudi, 16 février 2017

Bulletin quotidien sur l'activité solaire et géomagnétique du SIDC

Publié: 2017 Feb 16 1231 UTC

Prévisions SIDC

Éruptions solaires

Quiet conditions (<50% probability of C-class flares)

Géomagnétisme

Active conditions expected (A>=20 or K=4)

Moniteur de Flux de Proton

Quiet

	Flux de 10 cm	Ap
16 Feb 2017	075	011
17 Feb 2017	075	025
18 Feb 2017	075	012

Bulletin

In the past 24 hours, no C flares were observed. Very low solar activity (no C flares) is expected in the next 24 hours. Solar wind speed measured by DSCOVR was around 310 km/s until 6:25 UT on February 16, when it jumped to around 370 km/s, probably marking the arrival of a high speed stream from a positive coronal hole. Since then, solar wind speed has fluctuated between 370 and 430 km/s. The magnitude of the Interplanetary Magnetic Field (IMF) was around 3 nT until about 1:45 UT on February 16, when it started rising to values around 10 nT. Quiet geomagnetic conditions (K Dourbes between 0 and 2; NOAA Kp between 1 and 2) were registered in the past 24 hours. Due to the arrival of the high speed stream, quiet to active geomagnetic levels (K Dourbes < 5) are expected on February 16, 17 and 18, with possible minor storm episodes (K Dourbes = 5).

Estimation du nombre international de taches solaires (ISN) pour aujourd'hui : 014, sur la base de 21 stations.

Indices solaires pour 15 Feb 2017

Nombre de Wolf, observé par Catania	///
Flux solaire à 10 cm	075
AK Chambon La Forêt	006
AK Wingst	002
Ap estimé	002
Nombre international de taches solaires estimé	023 - Basé sur 26 stations

Résumé des événements marquants

Données fournies par le Solar Influences Data analysis Center© - SIDC - Traité par SpaceWeatherLive

Toutes les heures sont indiquées en UTC

<< Aller à l'aperçu quotidien